Batteries and Portable Power

Nanopower Op Amps can Increase Battery Life

Available in single-, dual-, and quad-channel versions, the TSU series of nanopower op amps from STMicroelectronics offer an ultra-low-power consumption of 580 nA (typ.) and 750 nA (max.) per channel when supplied by 1.8 V, combined with a supply voltage range of 1.5 to 5.5 V. These features make them well-suited for ultra-long life battery-powered applications, power metering, UV and photo sensors, electrochemical and gas sensors, PIR detection, battery current sensing, medical instrumentation or RFID readers.

Key features include: Submicro ampere current consumption of 580nA typical per channel at 25 degrees C at VCC = 1.8 V; Low supply voltage from 1.5V to 5.5V; Unity gain stable; Rail-to-rail input and output; Gain bandwidth product of 8 kHz typical; Low input bias current of 5pA maximum at 25 degrees C; High tolerance to ESD of 2 kV HBM; Industrial temperature range from -40 to 85 degrees C; and 42 years of typical equivalent lifetime (for TSU101) if supplied by a 220mAh coin type Lithium battery.

The 8 kHz gain bandwidth of these devices makes them ideal for sensor signal conditioning, battery supplied, and portable applications. They feature: tolerance to power supply transient drops; accurate signal conditioning of high impedance sensors; application performances guaranteed over industrial temperature range; and fast desaturation.

STMicroelectronics NV
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